Add statistics page with metrics, charts, and insights functionality

- Implemented CSS styles for the statistics page layout and components.
- Developed JavaScript functionality for managing statistics, including data fetching, chart rendering, and tab navigation.
- Created HTML template for the statistics page, integrating dynamic content for metrics, charts, and insights.
- Added responsive design adjustments and loading states for better user experience.

static/css/style.css

@@ -30,6 +30,7 @@
 @import 'components/alphabet-bar.css'; /* Add alphabet bar component */
 @import 'components/duplicates.css'; /* Add duplicates component */
 @import 'components/keyboard-nav.css'; /* Add keyboard navigation component */
+@import 'components/statistics.css'; /* Add statistics component */
 
 .initialization-notice {
     display: flex;